1492. n 的第 k 个因子
Medium | Math, Number Theory
Number Theory
1622. 花式序列
Hard | Math, Design, Segment Tree, Number Theory
1627. 图的连通性与阈值
Hard | Array, Math, Union-Find, Number Theory
1735. 构造乘积数组的方案数
Hard | Array, Math, Dynamic Programming, Combinatorics, Number Theory
1766. 互质树
Hard | Array, Math, Tree, Depth-First Search, Number Theory
1799. N 次操作后的最大分数和
Hard | Array, Math, Dynamic Programming, Backtracking, Bit Manipulation, Number Theory, Bitmask
1808. 最大化优雅除数的数目
Hard | Math, Recursion, Number Theory
1952. 三个除数
Easy | Math, Enumeration, Number Theory
1979. 找数组的最大公约数
Easy | Array, Math, Number Theory
1998. 数组的 GCD 排序
Hard | Array, Math, Union-Find, Sorting, Number Theory